Bobbin-winder



W. UONNOLLY.

BOBBIN WINDER.

Patented Jan". 26, 1886.

J U- V m WITNESSES i ATTORNEYS.

N. PETERS. Pholn-Lhhogruphar, Washington, D. c.

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BOBBlN-WIND ER.

.JPECIFICATION forming part of Letters Patent No. 335,019, dated January 26, 18E 6.

Application filed March 14, 1885. Serial No. 158,925. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM CoNNoLLY, of South Nor-walk, in the county of Fairfield and State of Connecticut, have invented a new and Improved Bobbin-Winder, of which the following is a full, clear, and exact description.

My invention relates to sewing machine bobbin-winders, and has for its object to simplify their construction and facilitate the operation of winding the bobbins with thread automatically and to any desired fullness.

The invention consists in various constructions and combinations of parts of the bobbin-winder, all as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of my improved bobbin-winder, partly broken away, showing also a part of thesewing-machine drivewheel. Fig. 2 is a plan view, partly broken away and in section. Fig. 3 is a plan view showing a modification of the tail-piece of the bobbinholder, and Fig. 4 is a vertical sectional elevation showing a modified construction of the spring-post of the bobbin-holder.

Referring first to Figs. 1 and 2, the letter A indicates the bobbin-holder drivewheel, which is fixed to a shaft, a, journaled in an arm, B, which is pivoted at b to lugs of a plate, 0, which is to be attached to the sewing-machine table D or an adjacent support, so that the wheel A may swing over on the pivot 2; against the drive-wheel E of the sewing-machine.

The letter F'indicates a tail-piece, which is fixed to arm B, and curves backward and passes through the post G, fixed to plate 0. Below the tail-piece is placed on the post the spiral spring H, which presses the tail piece up against the nut I, threaded onto the top of the post. It is evident that by screwing the nut I down on the post more or less the pressure of the wheel A on the wheel E may be regulated to a nicety, to take up wear of wheel A, and wheel A may be held away from wheel E, so as not to be driven thereby, as hereinafter more fully explained.

The letter J indicates the bobbin, adapted to be held on the split outer end of shaft (1, and so as to receive the thread j from an open eye, it, held to a standard, K, fixed to plate 0, the thread being led to the eye It from a spool, L, supported horizontally by a pin, M, which is fixed to a post, m, which rises from a baseplate, 0, fixed to the table orsupportD. The spool L may be placed by its central bore directly on the pin M; but I prefer to fit the tube or sleeve Nsn ugly in the bore of the spool, so that the spool and sleeve revolve together around the pin M, which gives a much smoother rotation to the spool as the thread quickly unwinds from it than would be the case if the spool revolved by its rough bore directly on the pin. The sleeve N has a head, a, which may be grasped for conveniently removingthe sleeve from an empty spool.

Below the spoolpin M, and ranging transversely to it, is fitted to slide in lug-bearings O P 011 plate 0 the rod R, which has a collar, r, between which and the bearing 0 is placed on rod R the spring S, which acts to force the back end, r, of the rod against the tail t of a tensionlever, T, which lever is pivoted at t to the upper end of the stud-bearing P, and so that its forward platelike end 29 will rest on the spool L of thread placed 011 the pin M. I make the collar r in some way adjustable along the rod Ras, for instance, by setting the stop pin r in any one of a series of holes,

r made in the r0d,whereby the tension of the spring S may be regulated to carry the lever T against the spool L with more or less force, as may be required in action with spools of varying diameters.

It is evident that the lever-plate I? will be pressed by spring S with greater force on the thread on the spool when the spool is full and the thread unwinds from it easier, and as the thread is reeled off the spool and the diameter of the thread wound on the spool gradually lessens, the tension of the spring decreases, and the pressure of the plate t on the spool will lessen in due proportion; hence the lever T will automatically maintain an even tension or pressure on the spool as the thread unwinds from it to pass through the eye 7:; to the bobbins, and no sudden breaking strains will be brought upon the thread.

J", ound thereon.

lever U projects beneath a screw, V, which is threaded into a block or bridge-piece, o, held by a screw, 1;, or otherwise to the plate 0, so that by setting the screw V down more or less the end u of lever U may be held nearer to or farther from the central eye of the bobbin, to determine the quantity of thread which shall be wound on the bobbin.

It is obvious that when the bobbin J fills with thread until the wound thread contacts the edge of end u of lever U, which is held from falling by the screw V, the continued winding of the thread for a few turns of the bobbin will cause the drive-wheel A to be lifted from the sewing-machine drive-wheel E, and the bobbin will instantly cease to rotate, the pressure of lever U on the wound bobbin-thread, the tension of eye It on the thread, and the pressure of lever T on the spool-thread all coacting to stop the bobbin, and at the same time lever T will stop the spool, so as to prevent unwinding of thethread from it, except by the pull of the thread caught in the next bobbin to be filled; hence the thread will not become snarled, and will not be wasted by unwinding from the spool, as it I would do if the momentum of the spool were As the winding mechanism stops automatically when the bobbin fills, the bobbin may be wound while attention is given to work being sewed by the machine, thus saving time; or

-any number of bobbins may be wound one after the other while the sewing is stopped, and when the bobbin-winder is not to be used the nut I or screw V may be turned down far enough to hold wheel A from wheel E, as will readily be understood;

In Fig. 3'the tail-piece F is represented in forked form with opposite arms standing one at each side of the post G and above the spring H, and in Fig. 4 a tail-piece F like that shown in Figs. 1 and 2 is passed through a slotted post, G, which has a central bore or cavity, in which the spring H is held out of sight, the screw 1 being threaded into the top of the post G, to act with the tail-piece and spring substantially in the manner above described.

The base-plates O O of the bobbin and spoolholders may be substituted by a single base plate, as indicated by the connecting dotted lines to win Fig. 2.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A bobbin-winder comprising a bobbinholding shaftjournaled in a pivoted arm, and carrying a drive-wheel adapted to contact the sewing machine drive-wheel, and said swinging arm carrying a tailpiece, a spring acting against the tail-piece to force the bobbin drivewheel towardthesewing-machinedrive-wheel, and a nut or equivalent device adapted to regulate the operative position of the bobbin drive-wheel or to hold it out ofaction, substantially as herein set forth.

2. The combination, in abobbin-winder, of the pivoted arm B, shaft a, drive-wheel A, tailpiece F, post G, spring H, and nut I, substantially as herein set forth.

3. In a bobbin-winder, a pivoted arm provided withatail-piece, a bobbin-holding shaft journaled in the said arm, a drive-wheel on said shaft, a spring acting against the tailpiece, and a nut for depressing the tail-piece against the action of the spring, in combination with a tension device, substantially as herein shown and described.

WILLIAM OONNOLLY.

\Vitn esses:

GEo. B. PLAISTED, SYLvEsTER HUNT. 

